Re: [Boost-build] How do I specify a dependency for a feature?

From: Uri Moszkowicz (uri_at_[hidden])
Date: 2020-10-29 19:04:10

Hi Brian,
Appreciate the reply. That's not quite what I was looking for. Rather than
a single definition of the vxworks value, can you create two definitions?
One for each version of GCC.

It occurs to me that I can also have two different values for cross-compile
too but I'd like to know if it's possible for the same value.

Thanks,
Uri

On Sat, Oct 24, 2020 at 12:24 PM Kuhl, Brian <brian.kuhl_at_[hidden]>
wrote:

> Hi Uri,
>
> Yes, here’s the example I did for our VxWorks wrapper for Boost.
>
> We cross-compile on Windows and Linux, so it just make sure the defaults
> from the host environment aren’t used.
>
> The *feature.feature* declares a feature called *cross-compile* with a
> possible option of *vxworks*
>
> The *feature.compose* declares what selecting the option *vxworks* does.
>
>
>
> feature.feature cross-compile
>
>     : vxworks
>
>     : composite propagated optional ;
>
>
>
> feature.compose <cross-compile>vxworks
>
>   : <target-os>vxworks
>
>     <threadapi>pthread
>
>     <threading>multi
>
>     <inlining>full
>
>     <optimization>speed
>
>     <binary-format>elf
>
>     <abi>sysv
>
>   ;
>
>
>
> *From:* Boost-build <boost-build-bounces_at_[hidden]> *On Behalf Of *Uri
> Moszkowicz via Boost-build
> *Sent:* Friday, October 16, 2020 1:57 PM
> *To:* boost-build_at_[hidden]
> *Cc:* Uri Moszkowicz <uri_at_[hidden]>
> *Subject:* [Boost-build] How do I specify a dependency for a feature?
>
>
>
> Hi,
>
> I'd like to specify a dependency for a feature, like below:
>
>
>
> feature.compose <MyFeature>yes :
>
>   <define>MY_FEATURE
>
>   <toolset>gcc-6.0.0:<include>$(dir-6.0.0)/include
>
>   <toolset>gcc-10.0.0:<include>$(dir-10.0.0)/include
>
>
>
> Is there a way I can do this with Boost::build?
>
>
>
> Thanks,
>
> Uri
>